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// -*- C++ -*-
//
// Package: GenHIEventProducer
// Class: GenHIEventProducer
//
/**\class GenHIEventProducer GenHIEventProducer.cc yetkin/GenHIEventProducer/src/GenHIEventProducer.cc
Description: <one line class summary>
Implementation:
<Notes on implementation>
*/
//
// Original Author: Yetkin Yilmaz
// Created: Thu Aug 13 08:39:51 EDT 2009
//
//
// system include files
#include <memory>
#include <string>
#include <iostream>
// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/global/EDProducer.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Utilities/interface/ESGetToken.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "SimDataFormats/GeneratorProducts/interface/HepMCProduct.h"
#include "SimDataFormats/HiGenData/interface/GenHIEvent.h"
#include "SimDataFormats/CrossingFrame/interface/MixCollection.h"
#include "HepMC/HeavyIon.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "SimGeneral/HepPDTRecord/interface/ParticleDataTable.h"
using namespace std;
//
// class decleration
//
class GenHIEventProducer : public edm::global::EDProducer<> {
public:
explicit GenHIEventProducer(const edm::ParameterSet&);
~GenHIEventProducer() override = default;
private:
void produce(edm::StreamID, edm::Event&, const edm::EventSetup&) const override;
const edm::EDGetTokenT<CrossingFrame<edm::HepMCProduct> > hepmcSrc_;
const edm::ESGetToken<ParticleDataTable, edm::DefaultRecord> pdtToken_;
const edm::EDPutTokenT<edm::GenHIEvent> putToken_;
double ptCut_;
const bool doParticleInfo_;
};
//
// constructors and destructor
//
GenHIEventProducer::GenHIEventProducer(const edm::ParameterSet& iConfig)
: hepmcSrc_(consumes<CrossingFrame<edm::HepMCProduct> >(iConfig.getParameter<edm::InputTag>("src"))),
pdtToken_(esConsumes<ParticleDataTable, edm::DefaultRecord>()),
putToken_(produces<edm::GenHIEvent>()),
doParticleInfo_(iConfig.getUntrackedParameter<bool>("doParticleInfo", false)) {
if (doParticleInfo_) {
ptCut_ = iConfig.getParameter<double>("ptCut");
}
}
//
// member functions
//
// ------------ method called to produce the data ------------
void GenHIEventProducer::produce(edm::StreamID, edm::Event& iEvent, const edm::EventSetup& iSetup) const {
using namespace edm;
const auto& pdt = iSetup.getData(pdtToken_);
double b = -1;
int npart = -1;
int ncoll = 0;
int nhard = 0;
double phi = 0;
double ecc = -1;
int nCharged = 0;
int nChargedMR = 0;
int nChargedPtCut = 0; // NchargedPtCut bym
int nChargedPtCutMR = 0; // NchargedPtCutMR bym
double meanPt = 0;
double meanPtMR = 0;
double EtMR = 0; // Normalized of total energy bym
double TotEnergy = 0; // Total energy bym
const auto& hepmc = iEvent.get(hepmcSrc_);
MixCollection<HepMCProduct> mix(&hepmc);
if (mix.size() < 1) {
throw cms::Exception("MatchVtx") << "Mixing has " << mix.size() << " sub-events, should have been at least 1"
<< endl;
}
const HepMCProduct& hievt = mix.getObject(mix.size() - 1);
const HepMC::GenEvent* evt = hievt.GetEvent();
if (doParticleInfo_) {
HepMC::GenEvent::particle_const_iterator begin = evt->particles_begin();
HepMC::GenEvent::particle_const_iterator end = evt->particles_end();
for (HepMC::GenEvent::particle_const_iterator it = begin; it != end; ++it) {
if ((*it)->status() != 1)
continue;
int pdg_id = (*it)->pdg_id();
const ParticleData* part = pdt.particle(pdg_id);
int charge = static_cast<int>(part->charge());
if (charge == 0)
continue;
float pt = (*it)->momentum().perp();
float eta = (*it)->momentum().eta();
float energy = (*it)->momentum().e(); // energy bym
//float energy = (*it)->momentum().energy(); // energy bym
nCharged++;
meanPt += pt;
// Get the total energy bym
if (fabs(eta) < 1.0) {
TotEnergy += energy;
}
if (pt > ptCut_) {
nChargedPtCut++;
if (fabs(eta) < 0.5) {
nChargedPtCutMR++;
}
}
// end bym
if (fabs(eta) > 0.5)
continue;
nChargedMR++;
meanPtMR += pt;
}
}
const HepMC::HeavyIon* hi = evt->heavy_ion();
if (hi) {
ncoll = ncoll + hi->Ncoll();
nhard = nhard + hi->Ncoll_hard();
int np = hi->Npart_proj() + hi->Npart_targ();
if (np >= 0) {
npart = np;
b = hi->impact_parameter();
phi = hi->event_plane_angle();
ecc = hi->eccentricity();
}
}
// Get the normalized total energy bym
if (TotEnergy != 0) {
EtMR = TotEnergy / 2;
}
if (nChargedMR != 0) {
meanPtMR /= nChargedMR;
}
if (nCharged != 0) {
meanPt /= nCharged;
}
iEvent.emplace(putToken_,
b,
npart,
ncoll,
nhard,
phi,
ecc,
nCharged,
nChargedMR,
meanPt,
meanPtMR,
EtMR,
nChargedPtCut,
nChargedPtCutMR);
}
//define this as a plug-in
DEFINE_FWK_MODULE(GenHIEventProducer);
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